Supplemental Disclosure to Statements of Cash Flows - Schedule of Supplemental Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Continuing Operations
Other Significant Noncash Transactions [Line Items]
Write off of fully depreciated property and deferred costs	$ 1,105	$ 6,903
Write of depreciated property and deferred costs due to sale/demolition	0	3,045
Change in accrued development capital expenditures	(1,981)	622
Unrealized gain (loss) on cash flow hedge, non cash transaction	(1,854)	385
Capitalized equity-based compensation	436	185
Discontinued operations
Other Significant Noncash Transactions [Line Items]
Write off of fully depreciated property and deferred costs	0	6
Write of depreciated property and deferred costs due to sale/demolition	12,049	96,936
Change in accrued development capital expenditures	$ (806)	$ (2,664)